Ko te pakeke i te waahi huri noa i te weld ka taea te awhina i te aromatawai i te pakaru o te weld, na reira ka awhina koe ki te whakatau mehemea he kaha e hiahiatia ana te weld, na ko te tikanga whakamatautau pakeke Vickers he tikanga hei awhina i te aromatawai i te kounga o te weld.
Shandong Shancai / Laizhou Laihua Testing Instrument Company's Vickers pakeke tester ka taea te mahi whakamatautau pakeke i runga i nga wahi paiherea ranei wāhi fehokotaki'anga.I te wa e whakamatautau ana i te pakeke o te waahi whakapiri, ka mahia nga inenga-maha i tetahi tawhiti mai i te taha o te tauira, i te tihi ranei o te waahi whakapiri.I muri i te whiwhinga i te nuku-maha, ka taea te ine i te uara pakeke ma te ine tonu ka taea te whiwhi kauwhata pihi.
I te wa e whakamahi ana i te whakamatautau pakeke a Vickers ki te whakamatautau i nga waahanga paihere, me tohu nga tikanga whakamatautau e whai ake nei:
1. Maamaa o te tauira: I mua i te whakamatautau, ka huri matou i te weld ki te whakamatautau kia maeneene tona mata, kaore he papa o te waikura, nga kapiti me etahi atu hapa.
2. I te raina waenganui o te weld, tangohia he tohu i runga i te mata kopiko ia 100 mm hei whakamatautau.
3. Ko te whiriwhiri i nga momo momo whakamatautau ka puta he hua rereke, na me whiriwhiri i te kaha whakamatautau tika i mua i te whakamatautau.
He whakaritenga mo te mutunga o te mata o te tauira kua whakamatauria, me ata whakarite kia rite ki te tauira metallographic.
Ko te maapono whakamatautau microhardness i roto i te tikanga whakamatautau microhardness he rite tonu ki te pakeke o Vickers, engari he iti ake te utaina i whakamahia i te pakeke Vickers-iti, he iti iho i te 1000g, a, ko te nuku ka puta he iti noa nga microns ki te rua ruarua. microns, na te whakamatautau microhardness he huarahi tino watea mo te ako i nga ahuatanga microstructure o te paparanga permeable.Ka whakamahia nuitia hei whakatau i te pakeke o ia wahanga i runga i te mata me te paparanga uru.
Ko te tohu o te microhardness te nuinga o te wa e whakaatuhia ana e te HV, a ko tana tikanga whakatau me tana tikanga he rite ki te tikanga pakeke Vickers.Ko te punaha uta, te punaha ine me te indenter tika o te microhardness tester he nui ake te tono atu i tera o te Vickers whakamaarama pakeke-iti.I tenei wa, kei te whakamahia whanuitia te miihini miihini ki nga mea mahi angiangi, na te mea ka eke te whakanui ki te 400 nga wa, ka whakamahia hei miihini miihini ngawari.
I roto i te tukanga o te whakamahi, me aro ki te kawenga, micrometer me te indenter o te microhardness tester, me tirohia i mua i te whakamahinga, ka whakamahia te poraka pakeke mo te tautuhi matawhānui o tona uara tohu.
Ko te kaiwhakamaori microhardness e whakamahi ana i te kawenga i roto i te mahi whakamatautau kia maeneene me te kakahu rite ka taea, kaore he paanga me te wiri.Hei whakarite i te tika o nga hua whakamatautau, he mea tika kia ine i nga wa maha ki nga waahanga rereke, ka kitea te uara toharite hei tohu i te uara pakeke o te paparanga whakamatautau uruhanga, te waahanga koranu ranei.Mo te paparanga whakaurunga e whakamahia ana i te teitei o te pāmahana, ka taea te ine i tona pakeke ma te whakamahi i te whakamatautau microhardness teitei.
Wā tuku: Apr-10-2024
